This product is not an airtight container. Oven, microwave, freezer, and dishwasher safe. Not for use with IH or direct flame. Approximately 10 x 10 x 6 cm Approximately 460g Glossy finish Made in Japan (Nagasaki Prefecture) Hakusan Toki Hasami-yaki Jam case Butter case Butter Cultured butter Echire Royal Copenhagen Wedgwood Rare Hard to obtain